Door-check.



B. DOWNEY.

DOOR CHECK.

APPLICATION FILED APR. 1, 1911.

1,085,027. Patented Jan. 20, 1914.

2 sums-$111131 1.

COLUMBIA PLANOGRAPH COUWASHINGTLIJN, n. c.

UNITED STATES PATENT OFFTQF).

BARTHOLOMEW DOWNEY, OF MARSHFIELD, WISCONSIN, ASSIGNOE OF ONE-HALF TO CHARLES HASLOW, OF SPENCER, WISCONSIN.

DOOR-CHECK.

To all whom it may camera:

Be it known that I, BARTI-IOLOMEW Dow- NEY, a citizen of the United States, residing at Harshfield, in the county of 00d and State of Wisconsin, have invented new and useful Improvements in Door-Checks, of which the following is a specification.

This invention relates to improvements in door checks and latches, and one of its objects is the provision of a combined door check and latch.

A further object of the invention is the provision of a combined door check and latch which shall be adapted to draw the door to fully closed position and to hold it in such position.

A still further object of the invention is 'the provision of a latch which, on operatively engaging the keeper, will draw the door to fully closed position and hold it in such position.

With the above and other objects in view the invention consists in the construction, combination and arrangement of parts hereinafter fully described and claimed, and illustrated in the accompanying drawings, wherein Figure 1 is a View in side elevation of a combined door check and latch constructed in accordance with my invention, the same being shown applied to a door, the bolt being shown in projected position, and the latch hook in inoperative position. Fig. 2 is a view similar to Fig. 1, except that the bolt is shown in retracted position and the latch hook in operative position. Fig. 3 is a sectional view taken on the vertical plane indicated by the line 33 of Fig. 1. Fig. A is a sectional view taken on the horizontal plane indicated by the line l-d of Fig. 1. Fig. 5 is a view in side elevation of one of the outer members of the bolt, illustrating the inner formation of the members. Fig. 6 is a view in side elevation of one of the outer members of the bolt, illustrating the outer formation of the members. Fig. 7 is a perspective View of the latch hook and the bolt operating and controlling members. Fig. 8 is a perspective view of the latch bar. Fig. 9 is a perspective view of the inner member of the bolt. Fig. 10 is a perspective view of the sleeve.

Referring to the drawings by reference numerals, 1 designates a hinged door of any type. The door 1 is provided with an Specification of Letters Patent.

Application filed April 1, 1911.

Patented Jan. 26, 1914.

Serial No. 618,297.

opening for the reception of the inner end 2 of the barrel 3. The barrel 3 is secured to the door 1 through the medium of screws 4: which pass through a flange P and enter the door, said flange being carried by the barrel. The inner end of the barrel 3 is fully open, while the outer end thereof is closed by a wall 5, said wall being provided with an inlet and outlet port 6 to permit air to be drawn into or forced from the barrel 3. The port 6 is controlled by a spring pressed valve 7 which is provided with an outlet port 7 said port being smaller than the port 6. A knob 9 is secured to the barrel 3 by a flange 8 carried by the barrel, and screws 8 passing through the flange and entering the knob. The flange 8 is recessed into the outer side of the knob 9. A plate 9 which covers the outer end of the barrel 3 and the flange 8, is secured to the knob 9 in any suitable manner. The plate 9" is provided with an opening 9 which registers with the ports 6 and 7 A collar 10, which is provided with a rectangular passage or bore 11, is secured within the inner end of the barrel 3 through the medium of screws 12 which pass through the barrel and enter the collar. Two op posed walls of the bore or passage 11 of the collar 10 are provided with recesses 12 terminating at their inner ends in shoulders 12.

A bolt, which comprises outer members 13 and an intermediate member 29, is slidably mounted in the barrel 3 and passes through the bore or passage 11 of the collar 10, said bolt being rectangular in cross section and of such cross sectional dimensions as to snugly engage the walls of the bore or passage 11, said collar limiting the movement of the bolt in both directions and holding it against rotary movement with relation to the barrel. The inner end of the bolt is provided with a piston 37, and mounted between the piston and the collar 11, is an expansible coiled spring 42. The action of the spring 42 is such as to draw the bolt into and hold itin the barrel 3. As the air compressed between the piston 37 and the wall 5 by the movement of the piston under the influence of the spring 42, can only escape through the comparatively small port 7 a this movement of the bolt is cushioned.

By reference to Figs. 5 and 6 of the drawings it will be seen that each of the outer members 13 of the bolt comprises a shank 11 and a head 15. Each head 15 consists of spaced jaws 16 and 17 which define the passage 15" for the reception of a keeper pin hereinafter referred to. The inner sides of the shanks 1 1 are provided with grooves 18 which open at their ends out through the ends of the shank and which have a transverse dimension smaller than the similar dimension of the shanks. The outer sides of the shanks 14 are provided with recesses 19 which open out through the inner ends of the shanks and which have a transverse dimension equal to that of the grooves 18. Cylindrical openings 20 are formed in the shanks 14c and open into the grooves and recesses 19. By reference to Fig. a of the drawings it will be seen that balls 20 are mounted in the openings 20 and that they have a diameter greater than the altitude of the openings. The halls are adapted to assume two positions, namely, an inward or inactive po sition and an outward or active position. When in active position the balls 2O engage the shoulders 12*;of the recesses 12 in the bore of the collar 10 and hold the bolt withdrawn from the cylinder, as fully disclosed in Fig. 1 of the drawings. The outward movement of the balls 20 is limited by plates 20, which are secured in the recesses 19, and which are provided with openings 20 through which portions of the balls extend when they are in active position. The plates 20" are secured in applied position, by rivets 20? hen the balls 2O are in inactive position the spring 42 is free to draw the bolt within the barrel 3.

The members 13 and '29 of the bolt are secured together by screws 13 which pass through openings 13 in the members 13, and openings 29 in the member 29. lVhen the parts of the bolt are assembled the heads 15 are maintained in spaced relation and the inner end of the member 29 projects inwardly beyond the inner ends of the members 13. The outer end of the member 29 terminates short of the heads 15 of the outer members 13. The projecting portion of the member 29 is provided with a threaded eX- tension 36. The piston 37 comprises a flexible member 38 and metal disks 10, one of which is located on each side of the member 33. The piston 37 is secured in applied position by a nut 41 applied to the threaded extension 36.

The halls 2O are operated and controlled by members 28, which are slidably mounted in the grooves 18, and which are pivotally connected to a latch hook 21. Under the influence of the latch hook 21 the members 28 are adapted to have a limited inward and outward movei'nent with relation to the bolt. This movement of the members 23 carries the recesses 28 into and out of registration with the openings 20. \Vhen the recesses 28 are in registration with the opening 20 the balls 2O move into the recesses, that is to say, they move into their inoperative position, and when the balls are in this position the spring 42 is free to draw the bolt into the barrel 3. lVhen the recesses 2E5 are out of registration with the openings 20, the balls are forced into active position in which position they engage in the grooves 12 and hold the bolt in its projected position. The latch hook 21 is pivotally mounted between the heads 15 011 a bolt 22 which passes through the openings '22 in the jaws 16', and through an opening 22 in the latch hook 21. The latch hook is adapted to assume two positions, namely, active and inactive positions. in Fig. 2, the latch hook 21 is shown in active position, and in Fig. 1 the latch hook is shown in inactive position. lVhen the latch hook 21 is in inactive position the recesses 28 are out of alinement with the open ings 20, and the balls 20 are in active position, holding the bolt in its projected position. When the latch hook 21 is in active position the recesses 23 are in alinement with the openings 20, the balls 2O are in inactive position, and the bolt is in its retracted position.

The latch hook 21 is held in its active position through the medium of the bar 31, which is slidably mounted in the bolt. To receive the bar 31, the member 29 is slotted, as at 30. The inner end of the bar 31 isprovided with a substantially U-shaped head 32, the members 33 and 34 of which extend inwardly beyond the inner ends of the members 13. The head 32 is provided with grooves 33 adapted to slidably embrace the legs of the member 29 so as to prevent the bar 31 from having any but a sliding movement with relation to the member. The bar 31 is held in normal position by an expansion spring 35 which is mounted between the plunger 37 and the head 32.

The latch hook 21 is provided with a tail piece 23 adapted to engage the outer end of the bar 31, permitting the bar to hold the latch hook in operative position. The jaws 16 of the head 15 carry a pin 16 which limits the movement of the latch bolt 21 in both directions. When the latch bolt 21 is in inoperative position, the shoulder 24- thereon engages the pin 16 while when the latch bolt is in operative position the tail piece 23 engages the pin 16*.

Assuming that all the parts of the combined check and latch are in assembled position, that the catch hook 21 is in inoperative position, and that the door is opened, the

peration of the device may be stated to be as follows: lVhen the door is swung in a direct-ion to close the same, the tail piece ot the latch hook 21 will engage the keeper pin 13, such engagement moving the latch hook into operative position, and moving the members 28 in a direction to bring the re cesses 28 in alinement with the openings 20, permitting the balls 20 to drop into inoperative position. Immediately after the balls 2O have assumed their inoperative position, the spring 42 will draw the bolt into the barrel 3, such movement of the bolt tightly closing the door. As the inward movement of the bolt is cushioned by the air between the piston 38 and the wall 5, the closing of the door will be accomplished without noise or jar. WVhen the latch hook 21 is in operative position it engages the keeper pin 43 and holds the door in closed position, and immediately after the latch hook 21 has been moved into operative position the bar 31 engages the tail piece 23 and holds the latch hook from being accidentally moved into inoperative position. The latch hook 21 is moved into operative position and the bar 31 engages the tail piece 23 before the spring 42 has an opportunity to draw the bolt within the casing, whereby it is apparent that the spring can act to draw the door to fully closed position. WVhen it is desired to open the door a pull is exerted on the knob 9. As the latch hook 21 is held against movement by the bar 31, a pull ex erted on the knob 9 will move the barrel 3 longitudinally of the bolt until the collar 1.0 engages the head 82 of the bar, and moves the bar sufficiently to withdraw it from engagement with the tail piece of the latch hook 21. As the latch hook 21 is now free to rotate a further pull upon the knob 9 will cause the keeper pin 43 to move the latch hook into its inoperative position. The movement of the latch pin into inoperative posit-ion moves the members 28 so as to throw the recesses 28 out of registration with the openings 20, and those portions of the members 28 located in the rear of the recesses 28 will engage and force the balls 20 into active position. WVhen the knob 9 is released the spring 42 will, when reacting,

' move the bar inwardly into the casing until the balls 2O engage the shoulders of the recesses 19.", the balls holding the bolt in projected position.

It should be understood that the bolt is in projected position when the door is opened so that the piston 37 will be in a position to cushion the closing movement of the door, and that the spring will be compressed so that when the bolt is released the spring will react and fully close the door and hold it. in closed posit-ion. It should also be under stood that the plunger is released when the latch bolt ismoved into its operative position by the keeper pin 43.

What I claim is 1. A combined door check and latch comprising a barrel having a port, a valve controlling the said port, a spring pressed piston within the barrel, a bolt connected to the piston, a latch hook carried by the bolt, means adapted to hold the bolt projected from the barrel against the tension of the spring, and means for controlling said first named means and adapted to be operated by the latch hook.

2. A combined check and latch comprising a barrel having a port, a valve controlling the said port, a spring pressed piston mounted in the barrel, a bolt connected to the piston, a latch hook carried by the bolt, means adapted to hold the bolt projected from the barrel against the tension of the spring, means for controlling said first named means and adapted to be operated by the latch hook, and spring pressed bar carried by the bolt and adapted to engage with and hold the latch hook in operative posit-ion.

A combined check and latch comprising a barrel having one end fully open and its opposite end provided with a port, a valve controlling the said port, a sleeve secured in the open end of the barrel and provided with recesses terminating in shoulders, a bolt slidably mounted in the barrel and sleeve, a piston secured to the bolt, a spring mounted between the piston and the sleeve, balls movably carried by the bolt, a latch hook pivotally secured to the bolt a bar slidably mounted on the bolt and provided with a head, a spring mounted between the said head and the piston and members slidably mounted on the bolt and connected to the latch hook and said members controlling the balls.

4. A latch comprising a casing, a spring pressed bolt mounted in the casing, means adapted to hold the bolt projected under the tension of the spring, a latch hook pivotally mounted on the bolt and means carried by the latch hook for controlling said first named means.

A latch comprising a casing, a spring pressed bolt mounted in the casing, a latch hook carried by the bolt, and a spring pressed bar adapted to engage with and hold the latch bolt in operative position.

In testimony whereof I affix my signature in presence of two witnesses.

BARTHOLOMEW DOWNEY.

Vitnesses EDWIN J. HAHN, C. E. BLOGETT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, 

